davidgut1982/lore-mcp

Overview

An open-source MCP server that unifies knowledge management using PostgreSQL with pgvector for vector storage, knowledge graphs, and research workflows. It integrates with Claude Code to provide context-aware assistance during development sessions.

Best for

Best for
Developers using Claude Code who want a centralized, searchable knowledge base with vector and graph capabilities

Use cases

• Store and query project documentation with semantic search
• Manage research notes with vector similarity and graph relationships
• Inject relevant context into Claude Code conversations

How to use

Install

pip install lore-knowledge-mcp[semantic]

Tools exposed

• LORE_SEMANTIC_SEARCH
• LORE_SEARCH_MODE_DEFAULT
• LORE_EMBEDDING_MODEL
• LORE_RRF_K
• kb_add
• kb_search
• kb_get
• kb_get_batch
• kb_list
• kb_update
• kb_delete
• kb_backfill_embeddings
• kb_embedding_status
• investigation_add
• investigation_list
• investigation_get
• investigation_log_experiment
• investigation_list_experiments
• investigation_delete_note
• investigation_delete_experiment

Tested with

Claude Desktop, Claude Code

Notes

An open-source MCP server that unifies knowledge management using PostgreSQL with pgvector for vector storage, knowledge graphs, and research workflows. It integrates with Claude Code to provide context-aware assistance during development sessions.

2 stars on GitHub. Last updated 2026-06-02. Licensed MIT.

Use cases

• Store and query project documentation with semantic search
• Manage research notes with vector similarity and graph relationships
• Inject relevant context into Claude Code conversations

Pros

• Combines vector search, graph storage, and research workflows in one server
• Leverages PostgreSQL and pgvector for scalable, well-supported infrastructure
• Open-source Python implementation that is extensible and auditable

Cons

• Requires separate PostgreSQL instance with pgvector extension
• Low GitHub stars suggest limited community adoption and potential instability
• Tightly coupled to Claude Code; may not work as smoothly with other MCP clients

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.